Fast & Reliable Global Delivery

Hi-Fi audio shipped worldwide in 3-5 days via FedEx.

Innovative & User-Friendly Design

Minimal yet powerful—built for audiophiles.

True Studio-Grade Sound

Crystal-clear Hi-Res audio with LDAC and ESS DAC.

Crafted to Perfection in Korea

Precision engineering. Premium components. 100% Made in Korea.

 chevron_left chevron_right
SLASH 4
SLASH4 - DoBlue
SLASH 4
SLASH 4
SLASH 4
SLASH4 - DoBlue
SLASH4 - DoBlue
SLASH4 - DoBlue
SLASH 4
SLASH 4
SLASH 4
SLASH 4
chevron_leftchevron_right

SLASH 4

$79.00 USD
$79.00 USD

🌐 Global Shipping & Customs Quick Guide

HS CODE 8517.62 (Bluetooth DAC)
Commercial Invoice Product price only (Shipping fees excluded for accurate local tax calculation).
0% Import Duty Applicable for USA, UK, EU, Canada, Australia, Japan, etc.
Import VAT Excluded (Payable via IOSS for seamless delivery).
EU Update (July 1, 2026) €3 fixed duty per line applies for shipments under €150.

* Note: Import duties, taxes (VAT), and customs clearance fees are the buyer's responsibility. Please check your local regulations and FedEx remote area surcharges before ordering.

Quantity

In Stock

Secure checkout  with PayPal
SLASH 4

SLASH 4

$79.00 USD
$79.00 USD

Slash4 Hi-Fi Bluetooth DAC & Headphone Amp

About this item

  • [ULTIMATE HI-FI UPGRADE: ESS QUAD DAC & TI OP-AMP]: Unlike generic receivers, SLASH4 features the flagship ESS ES9219 Quad DAC and Texas Instruments OPA1692 OP-AMP. It transforms standard car audio and home stereos into professional-grade systems, delivering 24-bit/96kHz Hi-Res sound with a 130dB SNR.
  • [ELIMINATE NOISE: BUILT-IN GROUND LOOP ISOLATOR]: Stop suffering from alternator whine and power noise. Our advanced LDO regulator and isolation technology physically block ground loop interference, ensuring a pitch-black, silent background. This is critical for both high-end car audio builds and commercial environments with complex power setups.
  • [TOP-TIER HI-RES WIRELESS: SONY LDAC & APTX ADAPTIVE]: Powered by the Qualcomm QCC5125 chipset, SLASH4 supports Sony LDAC (990kbps), aptX Adaptive, and aptX HD. The deliberate single-device pairing design ensures maximum bandwidth and 100% signal stability for lossless, studio-quality streaming.
  • [VERSATILE PRO OUTPUT: OPTICAL, AUX & HEADPHONE AMP]: The unique 3.5mm port serves three roles: Analog AUX for cars, Digital Optical for home/DSP amplifiers, and a powerful Headphone Amp. This versatility makes it the go-to tool for professional audio installers and commercial BGM setups.
  • [24/7 B2B RELIABILITY: HEAT-RESISTANT & MADE IN KOREA]: 100% Designed and Manufactured in Korea for professional 24/7 use. Built with a robust Navy-finished metal housing, it operates safely in extreme temperatures—from hot car interiors to enclosed equipment racks.
  • [PLUG-AND-PLAY CONVENIENCE]: USB POWERED: Simple USB-powered design allows for easy installation in any vehicle or home audio setup without complex wiring. COMPACT SIZE: Sleek dimensions of 72mm x 22mm x 13mm (2.83" x 0.82" x 0.51") fit any minimalist setup. BOX INCLUDES: SLASH4 Unit, Premium 3.5mm AUX Cable, User Manual.



Zero-Clutter Upgrade, Instant Connection Pure Sound, Zero Hissing Eliminates ground loop hum. Enjoy instant pairing and distortion-free audio.
ltimate Portable Hi-Fi, ESS Quad DAC Technology Studio Sound, Anywhere: 32-bit/384kHz Audio Connect headphones via 3.5mm or home amps via Optical Out for studio-quality sound anywhere.
For Android & iPhone Supports All Major High-Res Codecs Automatically detects and selects the optimal codec for high-resolution sound.
Wireless, Beyond Hi-Fi Qualcomm & ESS: The Pinnacle of Audio Performance QCC5125 & ESS 9219, perfected by SLASH's proprietary circuit design. Delivering ultimate synergy.
Pure Sound, No Distortion Unrivaled Immersion, Core Hi-Fi Audio Tech TI's OPA1692 delivers precise, original sound with ultra-low noise and zero distortion.
Immaculate Power & Signal Instant Pairing, Ready to Play LDO stabilizes power, LPF cleans signals. Discover pure audio with zero noise.
Total Noise Isolation ADVANCED Isolated DC/DC: Zero Ground Loop Noise Isolated grounds block all hum and noise. Enjoy pure, high-end silence with no audio loss.

Hi-Fi Headphone, 3.5mm Headphone DAC Your headphones can sound this good. Plug into adapter or power bank, pair SL4, and play. Experience high-resolution headphone sound.
Connect to Amp or Car DSP High-Res Audio via Optical Connection Connect to your amp or DSP via mini-TOSLINK optical out. Pair Bluetooth for stunning high-res audio.
Lossless Audio for DSP 3.5mm Mini-Toslink Optical Audio Converter Delivers pure digital signal to your DSP. Eliminates analog noise for crystal clear high-res sound.
Smart Auto-Reconnect Instant Pairing, Ready to Play Automatically connects to the last paired device the moment you enter. No setup required, just music
Wireless Studio Quality Stream Any Service in High Definition Enjoy Spotify, Tidal, and more with premium Bluetooth quality. Crystal clear, dynamic sound.




    About this item

    • [TRUE HI-FI UPGRADE WITH ESS QUAD DAC] – Unlike generic receivers, Slash4 features the premium ES9219 DAC. It transforms standard car audio into a high-fidelity system, delivering wider soundstage and richer detail (24-bit/96kHz) that cheap dongles cannot match.
    • [SILENCE IS GOLDEN: NOISE ELIMINATION] – Stop suffering from alternator whine and hissing sounds. Our advanced LDO regulator and isolation technology physically block power noise, ensuring a pitch-black background for pure music enjoyment.
    • [TOP-TIER HIGH-RES WIRELESS] – Fully supports LDAC, aptX Adaptive, aptX HD, and AAC. Experience lossless, CD-quality streaming from both Android and iOS devices with superior connection stability and minimal lag.
    • [OPTICAL OUTPUT & HEADPHONE AMP] – Features a unique Optical Output for interference-free digital connection to home DSPs/Amps. Also functions as a powerful portable DAC to drive high-impedance wired headphones directly.
    • [DEDICATED CONNECTION FOR PURITY] – Deliberately designed for single-device pairing. Slash4 prioritizes maximum bandwidth and stability for High-Res audio transmission, eliminating the signal degradation often caused by multi-point connections.



     Product Components


    Dimensions 

    0.82"D x 2.83"W x 0.51"H (22mm x 72mm x13mm) 

    Advanced Noise Isolation 

    Blocks unwanted power noise for pure, uninterrupted audio in cars and homes. 

      Optical Output Support  

    Connects seamlessly to amplifiers and speaker systems for high-fidelity sound. 

    Powerful Headphone Amp

    3.5mm Headphone Amp for Dynamic & Balanced Sound 

    LDO Noise Reduction

    PCB design minimizes background noise for crystal-clear audio. 

    High-Performance Op-Amp 

    OPA1692 op-amp delivers precise sound with minimal distortion. 

    Hi-Res Bluetooth Audio

    Features QCC5125 + ES9219 Quad DAC for premium wireless audio. 

    High-Resolution Streaming 

    LDAC, aptX HD, aptX Adaptive & More (24-bit Hi-Res) 

    Seamless Auto-Reconnect 

    Instantly reconnects to your last paired device for hassle-free playback. 

    LPF Noise Filtering 

    Removes unwanted noise for a clean and uninterrupted listening experience. 

    USB-A Power Supply 

    Provides stable and reliable power via USB-A. 

    Wireless Range 

    Stable Bluetooth Connection (Up to 15m/50ft) 

    Package Contents 

    Includes Slash4 Body, 3.5mm Cable, and User Manual. 
    Plug & Play for Car Audio  Plug into AUX, and it auto-reconnects when the engine starts. 

    Home Audio with Optical Input 

    Streams Hi-Res Bluetooth audio directly to your home system. 


     











     

     




    SLASH 4
    SLASH 4
    SLASH 4
    SLASH4 - DoBlue
    SLASH 4
    SLASH 4
    SLASH 4
    SLASH4 - DoBlue
    SLASH4 - DoBlue
    SLASH4 - DoBlue
    SLASH 4
    SLASH 4
    SLASH 4
    SLASH 4

    Our Premium Quality Audio Philosophy

    We are committed to delivering the best Bluetooth audio quality by incorporating 11 years of real-world feedback from Slash customers. Our products are developed in collaboration with audio engineers who have over 20 years of experience and award-winning product designers. Crafted by these experts in Korea, the Slash series is a true reflection of premium audio mastery. You can enjoy it with complete confidence—100% made in Korea.

    Any questions?

    Customers Also Bought

    Find the perfect match for your setup

    chevron_left chevron_right